Fire extinguisher



June 2, 1931. w B, BRONANDER 1,808,154

l FIRE EXTINGUISHER Filed MaICh 7, 1928 INVENTOR /f///If/W/ rnander Patented June 2, 1931 UNITED STATES WILHELM IB. BRONANDER, F MONTCLAIR, NEW JERSEY PATENT@ oFFicE vApplication filed March 7, 1928. Serial No. 259,762.

extinguisher.

This invention has for its salient object to provide a support for a grenade so constructed that the grenade can be easily and readily removed therefrom and, furthermore, so constructed and arranged that in case of fire the grenade will automatically drop, break and dispense the re extinguishing fluid. v Another object ofthe invention is to provide a bracket or holder for grenades comprising few parts and a structure that can be economically manufactured.

Another object of the invention is to provide a grenade support utilizing thermostatic metal in such a manner that the gre-` nade will be automatically released in case of fire.

Further objects of the invention will appear from the following specification taken in connection with the drawings, which form a part of this application, and in which Fig. 1 is a sectonal elevation of a thermostatic strip;

Fig. 2 is an elevational view showing one form of grenade support embodying the invention;

Fig. 3 is a top plan view of the structure shown in Fig. 2;

' Fig. 4 is an elevational view illustrating another embodiment of the invention;

Figs. 5 and 6 are sectional elevations taken substantially on lines 5-5 and 6-6 of Fig. 4;

Fig. 7 is an elevational 'view illustrating another embodiment of the invention; and Fig. 8 is a top plan view of the construction shown in Fig. 7.

The invention briefly described consists of a grenade support comprising a supporting member or bracket and means carried by the supporting member and including a strip of thermostatic metal for engaging and holding a grenade. The strip of thermostatic metalis so constructed and arranged that in case of re it will swing away from and release vthe grenade.

Further details of the invention will appear from the following description.

f In Fig. 1 of the drawings there is shown a bimetallic strip 10 of thermostatic metal formed of two metallic strips joined together and having different coeliicients of expansion.` rIhe strips are so arranged that under the action of heat the bimetallic strip y is bent or changes its coniiguration. The terms thermostatic strip, striprof thermostatic metal and thermostatic metal as used in the specification and claims are intended to designate or define strips formed by joining together two metallic strips having different coefficients of expansion and so arranged that the composite strip will bend or change its configuration under the action of heat. Such thermostatic metal is common in the arts and is used for various purposes, such as thermometers, thermostatic-switches, etc.

In Figs. 2 and 3 of the invention there is shown a supporting member in theformv of an eye 15to which is secured a disk 16 having radiallyl disposed `arms 17, 18 and 19 formed thereony or secured thereto. One or more of the arms is formed of thermostatic metal and the arms are normally bowed, as shown in Fig. 2, insuch a manner as to embrace'a grenade 20. The arms are resilient and'of sufficient strength to grasp and retain a grenade therein when the grenade is pushed into or within the arms, as shown in Fig. 2.

It will` be obvious that in case of firey the thermostatic metal will, under the action of heat, swing outwardly from the grenade, thus releasing the grenade which will fall and break, freeing the fire extinguishin fluid contained in the grenade. f v

In the form of the invention illustrated in Figs. 4, 5 and 6 there is shown a bracket or back plate 25 having a shelf 26 extending laterally therefrom and provided with an opening 27 for receiving the lower end of the grenade 20. 1 Y

The bracket 25 also has struck out from the material thereof and extending upwardly and laterally therefrom a lug .30. The grenade is held on the shelf 26 by a resilient yoke comprising arms 31 and 32 connected However, by forming both arms andthe loop yof thermostatic metal a greater spreading action of the arms funder the act-ion V`of heat is obtained.

It will be noted that the grenadeV issupported in tilted position and in case of fire the arms 3l and 32 will swing away from and release thegrenade which will then fall and break, freeing the fire, extinguishing fluid. y 1 Y VIn Figs. 7 and `8 the grenade is supported on the shelf 26, as in the form of the invention shown in Figs, 4, 5 and 6, but in this embodiment the grenade -is held on the shelf by an arm 40 having a. dished grenade engaging ymember 41 on the outer end thereof. The arm 40 is formed of thermostatic metal and has integrally formed therewith a loop 43, the other end of the arm being secured as shown at 44 to the backplate or bracket 25.

In case of i'ire the arm 40 will swing upwardly awayY from the grenade, thus releasing the `grenade from the engaging and retaining-member4l carried by the arm. The

, grenade will then Ydrop vand-break as above described.

From the foregoing description it will `be clear that simple, practical and inexpensive grenade holding. and `retaining means `has been designedandxtha-t irre-ach form of the invention a newkgrenade can be easilyand quickly placed inthe holderorfsupport agfter the thermostatic retaining means has VI.esumed its normal grenade retaining position. It will also be clear that the, only replace mentrequired to place the apparatus inoperable condition `after a fire is the grenade itself and no replacement of fusible linksbr otherheat responsive device is necessary.

By the term grenade7 as used in the -specification and claims is meant-a frangible container .having a fire extinguishing fluid therein. y

Other certain specific embodiments lof Vthe inventionntilizing thermostatic metal have been particularly illustrated and described, it will be obvious that further changes and modifications -in theconstruction and inthe arrangement ofV the thermostatic grenade holding and retaining elements may -bemade without departing from the spirit or scope of the invention, as expressed inthe -following claims.

Vl/Vhat I claim is: Y H v l. A. grenade support Acomprising :a supporting element, and grenade Vengaging and holding means carried by Said. elementeand including a strip formed of thermostatic metal adapted to swing away from and release the grenade under the action of heat thereon.

2. A grenade support comprising a suportino` element and means carried bsaidl p m a element, including a therinostatic .stiip,

Vadapted to .normally embrace `and hold a grenade and to release the grenade under the action of heat. Y Y

3. VAfgrena'desupport'comprising a bracket, means on the bracket for supporting a grenade 'from below, and means including a thermostatic strip for holding the grenade on said supporting'means, said grenade being biased -to l'fall by .gravity lWheiireleased from said supporting means.

4. lA`,-grenade-,support comprising a bracket, Lmeans on the bracket for supporting a grenade from below, and grenade embracing and holding means including athermostatic strip forliolding rthegrenade on saidsupporting means, said grenade being biased to fall by gravity when released from ysaid sup-4 porting means. i n

,5. A grenade support comprising ,a supporting element, means on the supporting ele-l ment for supporting agrenade from below, and grenade embracing and holding means including .a thermostatic strip for holding the grenade on said supporting means, said grenade being biased to fall by gravity when released from said supporting means.

-6. A grenade support comprising la .sup-

porting element, and a plurality of resilient arms carried thereby and adapted to embrace and support a grenade, at least one` .ofsaid arms being formed of tliermostatic metal constructed and arranged *to release .the grenade -upon a rise V.in ytemperature of said ther-mostatic metal. n

7. `A grenade support comprising-abracket, a shelf von the bracket vfor supporting Ya i grenade from below, said grenade being biased to fall from the shelf, and means including a Vthermostatic strip for liolding'ithe grenade on said supporting shelf, said there dflOVA mostatic strip .being adapted to release the Y grenade under :the action of heat. Y l 8. A `grenade support comprising a supporting element, and resilient means carried by said element, including a thermostatic strip, and adaptedto embrace and hold a strip of thermostatic metal carried by said bracket and having a portion adapted to engage the grenade and hold the grenade on the supporting means, said strip having a loop intermediate its ends engaging the-bracket, said holding means being adapted to release thek grenade under the action of heat.

In Witness whereof, Ihave hereunto set my hand this 3rd day of March, 1928.

WILHELM'B. BRONANDER. 

